Are there still Gentlemen's clubs in the UK, where women are not allowed, as members?Yes, White's Club is an example of such a place. There are female dancers and other professionals there but no female members.

The Only Woman Who Has Been on Mount Athos, GreeceOne place strictly banning women is Mount Athos, Greece. This ban on women extends also to females of animal species and dates back to a decree banning women entering the Eastern Orthodox monastic peninsula issued by the Byzantine Emperor Constantine Monomachos in 1060. Four Moldovan women trying to sneak into the EU recently tested this ban. News reports say that they were forgiven and not imprisoned.

55 years ago, Times reported how Aliki Diplarakou, Miss Greece of 1929, had dressed up in men's clothes and smuggled herself into the monks' sanctuary on Mount Athos to see with her own eyes what a place without women would be like.

Professions Where Women Are Not AllowedThe priesthood in the Catholic Church is still off-limits for women. The Vatican teaches that women cannot be ordained and has barred further discussion of the issue.

Women are also not allowed to elect a Pope. There is no legal ban but the only people allowed
to take part are Cardinals below the age of 80, and since Canon Law forbids women
from being ordained as priest, there are no women Cardinals and thus no woman
can elect a Pope.

Men’s football, that bastion of male machismo is officially off-limits for women too. A Mexican woman footballer was banned from playing for a professional men's club according to a FIFA Football's world governing body ruling.

The US Armed Services does not allow women in full combat roles. There has been some attempts to relax this ban but they have not been successful. "Women in the infantry: Forget about it!" is still the current line in the US Armed Forces. The official website sums it up as:

“Women have served in the United
States Army since 1775. They nursed the ill and wounded, laundered and mended
clothing, and cooked for the troops in camp on campaign; services that did not
exist among the uniformed personnel within the Army until the 20th Century.”

Women are not allowed to ride bicycles in the North Korean capital city of Pyonyang. According to the Hub of North Korea News Kim Jong Il saw a woman riding a bicycle wearing pants in 1996. Kim Jong Il then ordered:

p.s. Women are allowed to ride bicycles in North Korea from August 2012 in a change of policy announcement.

Photo source:In Malawi, women were not allowed by law to wear trousers from 1965 to 1994, under President Kamuzu Banda's rule.In Saudi Arabia, the highest religious authorities have issued Fatwas (bans) against women working in 'mixed' environments e.g. shop checkouts. Many employers still defy this ban and the Saudi Labour Ministry has reinstated women fired from their jobs.

Photo source:Women in Saudi Arabia are not supposed to drive motor vehicles. There is no law against this, but it is a social convention against Saudi women though Beduin women in the desert areas do drive around.